Electric food mixer



July 31, 1951 D. w. HOUSTON, JR

ELECTRIC FOOD MIXER A 3 Sheets-Sheet 1 Original Filed May 6, 1941 Fig. l

I u z entor Daniel W. Houslan,Jr. y 2

and

Wave; 5M

y 1951 D. w. HOUSTON, JR 2,562,790

ELECTRIC FOOD MIXER Original Filed May 6, 1941 5 Sheets-Sheet 2 Fig. 2

E In verztor July 31, 1951 Original Filed May 6, 1941 D. w. HOUSTON, JR

ELECTRIC FOOD MIXER 5 Sheets-Sheet 5 I n ventor Dahie/ W Housfon, Jr.-

Patented July 31, 1951 a, UNITED STATES P ELECTRIC Foop- MIXER Daniel W. Houston, J Bessemer, Ala.

Substituted for application Serial No. 392,141, ,May 6; 1941. This application September 11,

1950, Serial No. 184,305 v I 2 claims. (on, ass-as) This invention relates to household mixers of I the type provided for efficient mixing and beating of come'stibles, beverages and the like, and is a' substitute application for the abandoned application Serial No. 392,141, filed May 6, 1941.

An object of this invention is to provide a power driven household mixer which includes improved means for supporting the bowl thereof, and for rotating the bowl in a manner to insure a thorough mixing of the contents in the bowl.

Another object of the invention is to provide an improved scraper element for maintaining the interior wall of the bowl of the mixer free from the contents of the bowl, and for urging such contents inwardly towards the center of the bowl during the mixing operation to insure a thorough mixing of the contents in the bowl.

Still further objects of the invention reside in the provision of an electric food mixer that is strong, durable, highly efficient in operation, simple in construction and manufacture, and which is capable of being manufactured at a relatively low cost.

These, together with the various ancillary objects of the invention which will become apparent as the following description proceeds, are obtained by this electric food mixer, a preferred embodiment of which has been illustrated in the accompanying drawings, by way of example only, wherein:

Figure 1 is a side elevational view of the mixer. embodying the features of the present invention;

Figure 2 is a front elevational view of the mixer with certain parts thereof broken away and shown in section;

Figure 3 is a fragmentary detailed sectional view showing the manner of securing the bracket arm for the scraper blade;

Figure 4 is a side elevational view of the scraper blade, with certain parts shown in section and illustrating the manner of detachably securing the scraper blade to its bracket arm;

.Figure 5 is an edge elevational view of the scraper blade;

Figure 6 is a top plan view of a spring catch assembly forming part of the means for securing the scraper blade to its bracket arm;

Figure 7 is a bottom plan view of the casing ure 6;

Figure 8 is a side elevational view of a cover plate for the casing of the spring catch assembly; Figure 9 is a perspective detail f th upp portion of the blade with the housing assembly removed therefrom;

Figure 10 is a. perspective detail of the L- shaped bracket; and v Figure 11 is a plan view of the power transmission means as will be hereinafter more fully r ,50 forming part of the catch assembly shown in Figdescribed.

I Figure 12 is a vertical sectional view as taken along the plane of line I2--|2 in Figure 4;

Referringmore in detail to the drawings it will be seen'that in accordance with the present invention there is provideda hollow base indicated generally by the reference numeral 5 and composed of a pair of telescoping sections 6 and 1, which can be readily separated to permit access to the interior of the base.

Rising from the base 5 adjacent one end thereof is a pedestal 8 to the upper end of which. is pivoted, as at 9. a bracket, 10 providedon the casing of an electric motor -.ll through the medium of which the motor II is mounted on the pedestal 8 to swing in a vertical plane.

Journaled in the top section B of the base at alsuit'able point remote from the pedestal 8 is a vertical stub shaft I2 that is provided in the upper end thereof with a polygonal shaped socket 13 that is adapted to accommodate a correspondingly shaped stem It provided on the bottom of a revoluble platform It. 5

The platform I5 is somewhat saucer-shaped having the top part thereof dished out to accommodate a mixing bowl or the like I6 as suggested in Figure 1. 7

Also journaledin the top section B of the base laterally of the shaft I 2 is asimilar stub shaft [9 that at its upper end is equipped with a socket [3a to accommodate the stem M of the platform vIli when it, is desired to so position the platform l5 as may be required duev to the size of the mixing bowl that may be employed.

, The shaft I9 is equipped with a pulley 19a,

andthe shaft I2 is equipped with a pulley In. The shafts l2 and I9 are driven from a 'verti ,cal drive shaft I! suitably journaled, in the top I fisectionEG of the platform 5; shaft lllbeing.

equipped with a pulley Ila over which is trained a drive belt 18 that is also trained over the pulleys 12a and [9a respectively, as best'shown in Fig:- ure 11, v The shaft I1 is driven from the electric motor ll through the medium of a flexible shaft 20 that at one end terminates within the base 5 and at said end is equipped with a pinion gear 2 ithatis in mesh with a large gear wheel 22 mountedon the st'ubshaft ll. l1 l A The bracket arm 21 on the bracket arni 21d.

4 accommodate screws or other fastening elements 41, and through the medium of which the housing 36 is positively secured in association with the blade 33, and the cover plate 42 positively secured in position with respect to the housing 36 and the blade 33.

It v.willthus be seen that in order to properly "associate the blade as with the bracket arm 21 It will thus be seen that drive is trtirisitiitt'e1 from the motor ll through the gearing 24, 23 and shaft sections 20, a in association with the gearing 2], 22 to the shaft l1, and from the" shaft l1 through the belt and'pulley drive'c'orinection 18 to the platform [5 for revolvin the latter. i

all that is necessary is to sleeve the sleeve part 31 onto the arm 21a and the detent 40 will snap into the recess 4| thus securely retaining the blade 33 in association with the arm 21a.

It will also be seen that the bracket 28 may be '7 adjusted radially with respect to the center of Also in accordance with the present invention the motor casing H has integral therewith a depending socket formationj25 that has a lateral opening 26 through whichone end of the arm 21 of a substantially L-shapedbracket 28 isinsertible into the socket. h j," v retained against rota,- tive movement through the medium of a way 29 provided in the underside of the arm .Z'l'and c0- acting with a key 3!] provided in thebottom portion of the socket 25, as clearly shownin Figure 3.

Also the arm 21 of the bracket 28 is secured in the desired position lengthwise of the "arm relative to the socket 25 thr'oughthe medium of a spring detent 3| cooperable with recesses 32 provided at spaced intervals on the'arm 21 as shown inFigure 3. i

The arm 21a of the'bra cket 28 is adapted to have detachably secured theretofa scraper blade indicatedgenerally by the refe'rence numeral 33. Preferably the blade 33 is formedof rubber or suitable flexible or,elastic materialand has an edge portion 34 that conforms with the vertical cross sectional shape of the wallof the mixing bowl I6 tohave a working, wiping contact with the interior of the wall' of the bowl 16 as the latter revolves for scraping such contents of the bowl as would have a tendency; to cling to the wall thereof during the mixing operation' At an upper corner. thereof the blade is equipped with a latch assembly indicated generally by the reference numeral 35 for detachably securing the blade 33 to the aforementionedlarm 21a of bracket 28.

The ,assembly 33 embodies alhou sing flij of somewhat angular form thatiis in'olded with the bod ..-l 1, bla e 3Lai1d em od es a ver ical. integral sleeve portion .31 that is adapted to be sleeved on the arin'fla as shown in Figure The housing pat-tee isal'sc ,f rf d the to thereof with a charnberfiifl that houses aspring 39.for a ball detentjll that islcooperable with a =6 recess 4 l in the arm 21in amanne'r clearly shown in Figure 6 for detachably securin the bla de 33 it Access to t htmbergaisn d it r gii the top thereof, ,as shown in Figure 8, and ,tllQopen 1 "top jof the chamber 38 ,is closed, through' th e medium" of; "lsubs tantiall y c -shape cover plate-42.

The cover plate 2 straddles the blade33jwith the web or bightportion' of' the plate aispos w "over the topof' the chambier '38 as' suggested in Figures fornorrnally closing thetchamber,

opndse j ;bilii c vr 'fp a e ar i 'vided'with apertures 43, 44 that alignf withapertured lugs 45, 45 provided on thehousing'fl to thebowl [6, as the diameter of the bowl may require inorder to bring the working edge 34' of the blade into proper wiping engagement with the inner surface of the wall of the bowl 16. Thus a bowl of practically any size may be used. Also the blade 33 maybe adjusted radially inwardly. from the wall of the bowl IS in a manner .to permit the motor H, and associated parts to be tilted back on the pivot 9, and as may be desired for any one of several purposes not necessary to mention.

It will also be seen that in actual practice, with the motor running, the platform [5 will revolve at a suitable speed carrying with it the bowl l6 and as the bowl l6 and platform [5 revolve the blade 33 will have the edge 34 thereof in wiping engagement with the interior of the wall of the bowl for scraping the contents of the bowl from thewall, and urging such contents towards the center of the bowl to insure thorough and proper .mixing of such contents. It will also be apparent that the blade 33 may be readily disassociated from the bracket 28 for cleaning and sterilizing purposes. It is thought that themany advantages of a food inixier 'embo dying the features of the present invention will be apparent without further detailed description.

It will also be understood that while I have herein illustrated and described the preferred embodiment .of the invention, changes may be made therein by. thoseskilled in the. art without materially departing from the invention as herein illustrated and described.

I-Iaving thus described the invention, what is claimed as new is:

1, ma mixing device .of the character described, a substantiallyhollow base constituting a housing, a ,vertical shaft journaled in the top of thebase, a platform connected with said shaft to rotate therewith, a pedestal rising from the base, a prime mover pivotally supported on said pedestal for vertical swinging movement and embodying a-ca'sing having a socket, a bracket arm having an end portion detachably secured in said socket and a second depending end portion, said revoluble platform adapted to have a mixing bowl positioned thereon for revolving movement with the platform, a scraper blade on the depending end portion of said bracket arm for positioning within such mixing bowl for wiping engagement with the wall of the bowl, power transmission means housed: within said base and operatively connected with said vertical shaft, and

driving meansoperatively connecting said prime mover with saidppower transmission means.

2. In a mixing device of the character described, a base, a pedestal rising from said base, a ,bcwl supporting platform revolubly mounted on said base means mountedon said pedestal "embodyinga' so'cket equipped with a spring pressed detent, an L-shaped bracket having an arm insertable in said socket equipped with means to be engaged by said detent for securing said arm at the desired position of adjustment in engagement with said socket, said bracket having a depending vertical arm, and a Scraper blade detachably connected with the vertical arm of said bracket for positioning within the bowl on the platform for wiping engagement with the rim of the bowl as the bowl and platform revolve, and means for detachably connecting the blade with the second-named arm of said bracekt including a sleeve adapted to be sleeved on said arm of the bracket, and a detent carried by said sleeve and coacting with a recess in said arm for detachably securing said REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 414,632 Grail Nov. 5, 1889 1,302,923 Hills May 6, 1919 1,733,291 Aastrup Oct. 29, 1929 1,772,083 Hollenback Aug. 5, 1930 

